Validation of resistivity spectra from reinforced concrete corrosion by Kramers-Kronig transformations

In order to determine the true corrosion conditions in reinforced concrete structures, the measured impedance data must be of high quality. This paper applies Kramers-Kronig transforms (E;I;T) to validate the resistivity spec tra measured from corrosion of reinforcing steel bar in concrete. The resis tivity spectra were measured using four-electrode Wenner array that was pla ced on the surface of a reinforced concrete specimen. Various levels of ano dic corrosion rates were applied to the sample in order to induce corrosion . This paper shows that the KKT successfully assess the quality of the data . (C) 2001 Elsevier Science Ltd. All rights reserved.